San Mateo city, California
Official LSAD Designation: San Mateo city • Census GEOID: 0668252
• San Mateo County
San Mateo city is an incorporated city in San Mateo County, California. According to official records from the Census (2025), San Mateo city had an estimated population of 103,337 residents. Official Census Bureau geographic records classify this community under LSAD designation San Mateo city (GEOID 0668252).
Local Government Administration U.S. Census Bureau GMAF
City Of San Mateo
Municipal
Official Title:
City Manager
Address:
330 W 20TH AVE, SAN MATEO CA 94403-1388
County Of San Mateo
County
Official Title:
Deputy County Manager
Address:
400 COUNTY CTR, REDWOOD CITY CA 94063-1668
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 103,337 | 2025 |
| Median Household Income | $153,504 | 2020-2024 |
| Median Home Value | $1,618,700 | 2020-2024 |
| Land Area | 12.12 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).